ArticleThe ultrasound journal2020
Point-of-care ultrasound for the detection of hydronephrosis in emergency department patients with suspected renal colic.
Article in The ultrasound journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01323842 (Hydro II), which is not on this map. Cited by 30 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Hydro II: Emergency Department Ultrasound in Renal Colic
Who cites it
30 citing papers in PubMed, 49 citations in OpenAlex.
- Agreement between emergency medicine residents and a radiologist in ultrasonographic detection and grading of hydronephrosis in patients with suspected renal colic: a prospective study.Emergency radiology · 2026Observational
- Can resident-performed POCUS and clinical predictors effectively risk-stratify emergency department patients with confirmed renal colic?International journal of emergency medicine · 2026Article
- Article
- Observational
- Can Clinical Scores Reduce CT Use in Renal Colic? A Head-to-Head Comparison.Tomography (Ann Arbor, Mich.) · 2025Article
- Acute Kidney Injury: A Blocked Diagnosis.Cureus · 2025Article
- Back to bedside: Renal point-of-care ultrasonography (POCUS) by internal medicine resident physicians for identification of hydronephrosis in patients with acute kidney injury.Qatar medical journal · 2025Article
- Pre-hospital Identification of a Giant Bladder Calculus through Screening Sonography: A Case Report.Current medical imaging · 2025Article
- Cholecystoduodenal Fistula and Urosepsis in A Febrile Emergency Department Patient: A Case Report.Clinical practice and cases in emergency medicine · 2025Article
- Development and Evaluation of a Kidney Point-Of-Care Ultrasound (POCUS) Training Program for Nephrology Fellows: A Quality Improvement Study.Canadian journal of kidney health and disease · 2025Article
- Time Required to Perform Point-of-Care Ultrasound in an Academic Nephrology Hospital Service.Kidney international reports · 2024Article
- Point-of-Care Kidney and Genitourinary Ultrasound in Adults: Image Acquisition.Journal of visualized experiments : JoVE · 2024Article
- Evaluation of point-of-care ultrasound use in the diagnostic approach for right upper quadrant abdominal pain management in the emergency department: a prospective study.Internal and emergency medicine · 2024Article
- Validation of machine learning models for estimation of left ventricular ejection fraction on point-of-care ultrasound: insights on features that impact performance.Echo research and practice · 2024Article
- Test characteristics of point-of-care ultrasonography in patients with acute kidney injury.The ultrasound journal · 2024Article
- Point-of-care ultrasound Usage and accuracy within a Canadian urology division.Canadian Urological Association journal = Journal de l'Association des urologues du Canada · 2024Article
- Ultrasound accuracy in evaluating renal calculi in Maysan province.Journal of medicine and life · 2024Article
- Review
- Point-of-Care Ultrasonography in Internal Medicine: Limitations and Pitfalls for Novice Users.Cureus · 2023Review
- PoCUS in nephrology: a new tool to improve our diagnostic skills.Clinical kidney journal · 2023Review
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPoint-of-care ultrasound (PoCUS) by emergency physicians for renal colic has been proposed as an alternative to computed tomography (CT) to avoid ionizing radiation exposure and shorten emergency department length of stay. Previous studies have employed experienced or credentialed ultrasonographers or required advanced ultrasound skills. We sought to measure the diagnostic accuracy of PoCUS by physicians with varied experience using a simplified binary outcome of presence or absence of hydronephrosis. Secondary outcomes include assessment as to whether the presence of hydronephrosis on PoCUS is predictive of complications, and to evaluate possible causes for the reduced diagnostic accuracy such as body mass index (BMI) and time between PoCUS and formal imaging, and scanner experience.
results413 patients were enrolled in the study. PoCUS showed a specificity of 71.8% [95% CI 65.0, 77.9] and sensitivity of 77.1% [95% CI 70.9, 82.6]. Hydronephrosis on PoCUS was predictive of complications (relative risk 3.13; [95% CI 1.30, 7.53]). The time interval between PoCUS and formal imaging, BMI, and scanner experience did not influence the accuracy of PoCUS.
conclusionsPoCUS for hydronephrosis in suspected renal colic has moderate accuracy when performed by providers with varied experience for the binary outcome of presence or absence of hydronephrosis. Hydronephrosis on PoCUS is associated with increased rates of complications. PoCUS for hydronephrosis is limited in its utility as a stand-alone test, however this inexpensive, readily available test may be useful in conjunction with clinical course to determine which patients would benefit from formal imaging or urologic consultation. ClinicalTrials.gov Identifier NCT01323842.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.